Analysis
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max time kernel
150s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
29-02-2024 08:41
Behavioral task
behavioral1
Sample
2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe
Resource
win10v2004-20240226-en
General
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Target
2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe
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Size
82KB
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MD5
89824ce20db03293c17952b532b74dee
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SHA1
4ecb0617e2f0b79dc570dff69ae8ed9d1253d6c5
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SHA256
f631bd53baa45c78b784cca95d86db9322b41f340f0e714be7f01ad27c52ffda
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SHA512
1e43667954022a645d615ef260988ed1214b7003652f64dd80e318d2aa06982c0f93da1f3b51ce962fb3e7f6e5c2be6c7af63d836931ae5f90099f2f0f5719bc
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SSDEEP
768:4DjahoICS4AIiaVRShxdEe+T0iN2QwdincJ9JGEKvrXSLA6zbjon8:azICS4AT6GxdEe+TOdincJXvKvGLBf
Malware Config
Extracted
C:\tvO7Xl678.README.txt
blackmatter
http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/GDBJS76DH3D4IKQD2QO7R
Signatures
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BlackMatter Ransomware
BlackMatter ransomware group claims to be Darkside and REvil succesor.
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Renames multiple (179) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\tvO7Xl678.bmp" 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe Set value (str) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\tvO7Xl678.bmp" 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
pid Process 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe -
Modifies Control Panel 3 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe Key created \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\Desktop 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe Set value (str) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\Desktop\WallpaperStyle = "10" 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe -
Suspicious use of AdjustPrivilegeToken 17 IoCs
description pid Process Token: SeBackupPrivilege 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe Token: SeDebugPrivilege 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe Token: 36 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe Token: SeImpersonatePrivilege 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe Token: SeIncBasePriorityPrivilege 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe Token: SeIncreaseQuotaPrivilege 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe Token: 33 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe Token: SeManageVolumePrivilege 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe Token: SeProfSingleProcessPrivilege 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe Token: SeRestorePrivilege 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe Token: SeSecurityPrivilege 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe Token: SeSystemProfilePrivilege 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe Token: SeTakeOwnershipPrivilege 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe Token: SeShutdownPrivilege 2168 2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe Token: SeBackupPrivilege 2496 vssvc.exe Token: SeRestorePrivilege 2496 vssvc.exe Token: SeAuditPrivilege 2496 vssvc.exe -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-29_89824ce20db03293c17952b532b74dee_blackmatter_darkside.exe"1⤵
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2168
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2496
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD58a485e9f1237d69236522d2409a7fc3c
SHA1fab1b7c56399623ae49ba840d0a88deb20099b5d
SHA256d9006d5c753c364b27388831f03332f404b719a66f344ce8b1a340da24e93d53
SHA512d0f2416496c77ad305de712ac8b6b42d9b57337eec88e66dddd8fc59309acda7a08ab3a492b961a850e8e501eafc0b23f6371af78210b86beefaae980e014483